HiDream-I1 Dev
HiDream-I1 Dev is a distilled 17B text to image model that balances speed and quality. It runs in about 28 diffusion steps and supports LoRAs for style control. Ideal for rapid iteration, style exploration, and clean concept rendering in production workflows.
API Options
Platform-level options for task execution and delivery.
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taskType
string required value: imageInference -
Identifier for the type of task being performed
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taskUUID
string required UUID v4 -
UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.
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outputType
string default: URL -
Image output type.
Allowed values 3 values
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outputFormat
string default: JPG -
Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.
- `JPG`: Best for photorealistic images with smaller file sizes (no transparency).
- `PNG`: Lossless compression, supports high quality and transparency (alpha channel).
- `WEBP`: Modern format providing superior compression and transparency support.
**Transparency**: If you are using features like background removal or LayerDiffuse that require transparency, you must select a format that supports an alpha channel (e.g., `PNG`, `WEBP`, `TIFF`). `JPG` does not support transparency.Allowed values 3 values
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outputQuality
integer min: 20 max: 99 default: 95 -
Compression quality of the output. Higher values preserve quality but increase file size.
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webhookURL
string URI -
Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.
Learn more 1 resource
- Webhooks PLATFORM
- Webhooks
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deliveryMethod
string default: sync -
Determines how the API delivers task results.
Allowed values 2 values
- Returns complete results directly in the API response.
- Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.
Learn more 1 resource
- Task Polling PLATFORM
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uploadEndpoint
string URI -
Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.
Common use cases:
- Cloud storage: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
- CDN integration: Upload to content delivery networks for immediate distribution.
// S3 presigned URL for secure upload https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600 // Google Cloud Storage presigned URL https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789 // Custom storage endpoint https://storage.example.com/uploads/generated-image.jpgThe content data will be sent as the request body to the specified URL when generation is complete.
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safety
object -
Content safety checking configuration for image generation.
Properties 2 properties
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safety»checkContentcheckContent
boolean default: false -
Enable or disable content safety checking. When enabled, defaults to
fastmode.
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safety»modemode
string default: none -
Safety checking mode for image generation.
Allowed values 2 values
- Disables checking.
- Performs a single check.
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ttl
integer min: 60 -
Time-to-live (TTL) in seconds for generated content. Only applies when
outputTypeisURL.
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includeCost
boolean default: false -
Include task cost in the response.
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numberResults
integer min: 1 max: 20 default: 1 -
Number of results to generate. Each result uses a different seed, producing variations of the same parameters.
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acceleratorOptions
object -
Advanced caching mechanisms to speed up generation.
Properties 12 properties
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acceleratorOptions»cacheEndStepcacheEndStep
integer min: 1 -
Absolute step number to end caching. Must be greater than
cacheStartStepand less than or equal tosteps.
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acceleratorOptions»cacheEndStepPercentagecacheEndStepPercentage
integer min: 1 max: 100 -
Percentage of steps to end caching. Alternative to
cacheEndStep. Must be greater thancacheStartStepPercentage.
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acceleratorOptions»cacheMaxConsecutiveStepscacheMaxConsecutiveSteps
integer min: 1 max: 5 default: 3 -
Limits the maximum number of consecutive steps that can use cached computations before forcing a fresh computation.
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acceleratorOptions»cacheStartStepcacheStartStep
integer min: 0 -
Absolute step number to start caching. Must be less than
cacheEndStep.
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acceleratorOptions»cacheStartStepPercentagecacheStartStepPercentage
integer min: 0 max: 99 -
Percentage of steps to start caching. Alternative to
cacheStartStep. Must be less thancacheEndStepPercentage.
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acceleratorOptions»fbCachefbCache
boolean default: false -
First Block Cache (FBCache) acceleration. Reuses feature block computations across steps.
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acceleratorOptions»fbCacheThresholdfbCacheThreshold
float min: 0 max: 1 step: 0.01 default: 0.25 -
Controls the sensitivity threshold for determining when to reuse cached computations. Lower values reuse more aggressively.
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acceleratorOptions»teaCacheteaCache
boolean default: false -
TeaCache acceleration for transformer-based models. Estimates step differences to skip redundant computations.
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acceleratorOptions»teaCacheDistanceteaCacheDistance
float min: 0 max: 1 step: 0.01 default: 0.5 -
Controls the aggressiveness of the TeaCache feature. Lower values prioritize quality, higher values prioritize speed.
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acceleratorOptions»dbCachedbCache
boolean default: false -
DB Cache (CacheDiT) acceleration. Caches and reuses intermediate transformer block outputs to skip redundant computations.
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acceleratorOptions»dbCacheThresholddbCacheThreshold
float min: 0 max: 1 step: 0.01 default: 0.25 -
Controls the sensitivity threshold for DB Cache. Lower values reuse cached blocks more aggressively, higher values prioritize quality.
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acceleratorOptions»dbCacheSkipIntervaldbCacheSkipInterval
integer min: 1 default: 5 -
Controls how many steps to skip between cache refreshes. Higher values skip more steps for faster generation at the cost of quality.
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Generation Parameters
Core parameters for controlling the generated content.
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model
string required value: runware:97@2 -
Identifier of the model to use for generation.
Learn more 3 resources
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positivePrompt
string required -
Text prompt describing elements to include in the generated output.
Learn more 2 resources
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negativePrompt
string -
Prompt to guide what to exclude from generation. Ignored when guidance is disabled (CFGScale ≤ 1).
Learn more 1 resource
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width
integer min: 128 max: 2048 step: 16 default: 1024 -
Width of the generated media in pixels.
Learn more 2 resources
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height
integer min: 128 max: 2048 step: 16 default: 1024 -
Height of the generated media in pixels.
Learn more 2 resources
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seed
integer min: 0 max: 9223372036854776000 -
Random seed for reproducible generation. When not provided, a random seed is generated in the unsigned 32-bit range.
Learn more 1 resource
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steps
integer min: 1 default: 28 -
Total number of denoising steps. Higher values generally produce more detailed results but take longer.
Learn more 1 resource
-
scheduler
string -
Scheduler to use for the diffusion process.
Allowed values 75 values
Learn more 2 resources
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CFGScale
float min: 0 step: 0.01 -
Guidance scale representing how closely the output will resemble the prompt. Higher values produce results more aligned with the prompt.
Learn more 1 resource
-
lora
array of objects min items: 1 -
With LoRA (Low-Rank Adaptation), you can adapt a model to specific styles or features by emphasizing particular aspects of the data. This technique enhances the quality and relevance of generated content and can be especially useful when the output needs to adhere to a specific artistic style or follow particular guidelines.
Multiple LoRA models can be used simultaneously to achieve different adaptation goals.
Examples 1 example
"lora": [ { "model": "<lora-model-air>", "weight": 0.8 } ]Learn more 1 resource
Properties 3 properties
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lora»modelmodel
string required -
LoRA model identifier.
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lora»weightweight
float min: -4 max: 4 step: 0.01 default: 1 -
Strength of the LoRA influence. A value of 0 means no influence. Higher values increase the influence, and negative values can be used to steer away from the LoRA's style.
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lora»transformertransformer
string default: both -
Transformer stages to apply LoRA. Some video models use separate high-noise and low-noise processing stages, and LoRAs can be selectively applied to optimize their effectiveness.
Allowed values 3 values
- Apply LoRA only to the high-noise processing stage (coarse structure and early generation steps).
- Apply LoRA only to the low-noise processing stage (fine details and later generation steps).
- Apply LoRA to both stages for full coverage.
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Windworn Salt Flats Caravan
{
"taskType": "imageInference",
"taskUUID": "a8313ed9-d3fe-4003-bc62-b55745b18bd6",
"model": "runware:97@2",
"positivePrompt": "A vast white salt pan stretching to the horizon under a pale apricot sky, a long caravan of towering pack beasts draped in patterned fabric and brass charms crossing shallow reflective water, travelers in weathered indigo robes and wind scarves, scattered cargo sleds leaving delicate tracks, distant heat shimmer, skeletal mineral formations rising like ruined arches, migrating birds wheeling overhead, cinematic composition, ultra-detailed textures, atmospheric depth, elegant color harmony, grounded realism with imaginative worldbuilding, crisp concept render, dramatic scale, soft low-angle sunlight, subtle dust haze, highly refined",
"width": 1024,
"height": 576,
"seed": 27959,
"steps": 28
}{
"taskType": "imageInference",
"taskUUID": "a8313ed9-d3fe-4003-bc62-b55745b18bd6",
"imageUUID": "f81ebde9-2c86-4ef3-9ab8-1c75571f3908",
"imageURL": "https://im.runware.ai/image/os/a01d21/ws/2/ii/f81ebde9-2c86-4ef3-9ab8-1c75571f3908.jpg",
"seed": 27959,
"cost": 0.0045
}Amber Tideland Glass Conservatory
{
"taskType": "imageInference",
"taskUUID": "5c81a469-c457-44cc-b49d-6dc95cc505dc",
"model": "runware:97@2",
"positivePrompt": "A vast glass conservatory rising from a shallow copper-gold tideland at low water, winding mosaic walkways above reflective pools, towering tropical plants and rare succulents under fractured crystal roofs, brass irrigation channels, flocks of pale wading birds, a lone botanist in weathered field gear carrying specimen cases, distant dunes and sun-hazed sky, intricate architectural details, luminous warm atmosphere, elegant environmental storytelling, ultra-detailed, clean concept render, cinematic wide shot",
"width": 1024,
"height": 576,
"seed": 61241,
"steps": 28
}{
"taskType": "imageInference",
"taskUUID": "5c81a469-c457-44cc-b49d-6dc95cc505dc",
"imageUUID": "6f5b3fef-cd52-4c43-a779-a79bff695435",
"imageURL": "https://im.runware.ai/image/os/a13d12/ws/2/ii/6f5b3fef-cd52-4c43-a779-a79bff695435.jpg",
"seed": 61241,
"cost": 0.0045
}Clockwork Apiary Above Marsh
{
"taskType": "imageInference",
"taskUUID": "54cb0060-8e57-464f-8ec0-8d06ba72fc90",
"model": "runware:97@2",
"positivePrompt": "A vast elevated apiary of ornate brass and cedar beehives suspended on slender stilts above a misty marsh at dawn, hundreds of tiny bridges connecting hexagonal hive towers, beekeeper-engineers in waxed canvas coats tending mechanical bees with delicate copper wings, reeds and dark water below reflecting pale apricot sky, drifting fog ribbons, flocks of white birds crossing the distance, intricate gears, pollen baskets, honey glass tubes, weathered wood platforms, cinematic wide shot, highly detailed concept rendering, crisp focus, layered depth, natural color harmony, poetic industrial fantasy, soft golden atmosphere, refined textures, elegant composition",
"width": 1024,
"height": 576,
"seed": 34920,
"steps": 28
}{
"taskType": "imageInference",
"taskUUID": "54cb0060-8e57-464f-8ec0-8d06ba72fc90",
"imageUUID": "031ef688-7dae-4672-a300-d8b001549395",
"imageURL": "https://im.runware.ai/image/os/a04d20/ws/2/ii/031ef688-7dae-4672-a300-d8b001549395.jpg",
"seed": 34920,
"cost": 0.0045
}